// See the Python documentation. _.range = function(start, stop, step) { if (stop == null) { stop = start || 0; start = 0; } step = step || 1; var length = Math.max(Math.ceil((stop - start) / step), 0); var range = Array(length); for (var idx = 0; idx < leng...
test-treeshake test .eslintrc .gitignore .travis.yml CNAME CODE_OF_CONDUCT.md CONTRIBUTING.md LICENSE README.md SECURITY.md bower.json favicon.ico index.html karma.conf-sauce.js karma.conf.js package-lock.json package.json rollup.common.js ...
function createReduce(dir) { // Optimized iterator function as using arguments.length // in the main function will deoptimize the, see #1991. function iterator(obj, iteratee, memo, keys, index, length) { for (; index >= 0 && index < length; index += dir) { var currentKey = keys ...
var hello = function(name) { return "hello: " + name; }; hello = _.wrap(hello, function(func) { return "before, " + func("moe") + ", after"; }); hello(); => 'before, hello: moe, after' negate_.negate(predicate) 返回一个新的predicate函数的否定版本。
_.map({one: 1, two: 2, three: 3}, function(num, key){ return num * 3; }); => [3, 6, 9] reduce_.reduce(list, iterator, memo, [context])别名:inject, foldl 也被称为inject和foldl,reduce将一个list里的所有值归结到一个单独的数值.Memo是归结的初始值, 而且每一步都由iterator返回....
[Solved] TypeError: Can’t Multiply Sequence by non-int of Type ‘float’ In Python? How to get variable name as String in Python Convert String to Char array in Python Convert Dict to String in Python Remove Word from String in Python Convert bool to String in Python Prefix r before St...
{function(){varlist=['jenny','pooja','sameer'];_.each(list,function(name,key))console.log(name);console.log(key);}}; Explanation In the above syntax, we use JavaScript; here first we need to import the underscore library as shown in the above syntax. After that we take the script...
A port of the native Python range() function. See the Python documentation. _.range = function(start, stop, step) { if (stop == null) { stop = start || 0; start = 0; } if (!step) { step = stop < start ? -1 : 1; } var length = Math.max(Math.ceil((stop - start) ...
[Function], fn2: [Function: fn_name], fn3: [Function: fn_name], fn4: [Function], null1: null, undef1: undefined, deep: { a: [ { longstr: "This really long string will force the object containing it to line-wrap. Underscore-cli is smart about whitespace and only wraps when ...
alert(p.name); //当然了,你也可以反过来用,例如一个函数不让它new,比如alert, var MyAlert = function(str){ if(this instanceof MyAlert){ throw new Error("MyAlert is not a constructor"); } alert(str); } MyAlert(111);//弹出 new MyAlert(222);...